⚠️ Honda manufacturer position
Honda i-HDS describes fuel pump access under rear seat on Accord. Wrong fuel excluded from warranty.
Vehicle information
| Make | Honda |
|---|---|
| Model | Accord |
| Market status | Sold new in Great Britain — Accord withdrawn new but strong used hybrid market |
| Body styles | Saloon |
| Generations | CU/CW (2008–2015 UK), later imports limited — hybrid Accord popular used |
| Engine options | Petrol: 2.0–2.4 L petrol on older UK Accords Diesel: 2.2 i-DTEC diesel on some UK Accords Hybrid: e:HEV / i-MMD hybrid — petrol tank |
| Fuel tank capacity | Approximately 56 litres on ICE/hybrid |
| Fuel system | Petrol injection; i-DTEC common-rail diesel on diesel trims; hybrid uses petrol filler only |
| Access method | Under rear seat pump module access typical |
| Anti-siphon | Yes |
| Service portal | Honda Service Express / i-HDS |
Misfuel risk Moderate
Petrol and diesel variants share similar filler arrangements; mis-fuelling most often affects diesel models where petrol causes immediate high-pressure system risk.
If the engine was not started
Drain, filter, correct fuel, prime.
If the engine was started
Diesel Accord with petrol: HP pump and injector inspection.
Access procedure
- Disconnect the negative battery terminal and relieve fuel system pressure per OEM procedure.
- Access the in-tank fuel pump module via the manufacturer-specified route (access panel or tank lowering).
- Drain contaminated fuel using approved recovery equipment into suitable containers for hazardous waste duty of care.
- Inspect the tank, sender unit, and lines; replace the fuel filter and any contaminated flexible lines as required.
- Reassemble, refill with the correct fuel grade, prime the low-pressure circuit, and check for leaks before start.
- If the engine was run on wrong fuel, follow OEM guidance for high-pressure pump, rail, and injector inspection before restart.
Frequently asked questions
What should I do if I put petrol in my Honda Accord diesel?
Do not start the engine. Arrange OEM-method tank fuel extraction and hazardous waste disposal under UK duty of care. A GBIFDA-certified technician can document the procedure for insurers.
Does Honda warranty cover misfuel on an Accord?
Manufacturer warranties typically exclude wrong fuel as misuse. Expect out-of-pocket or insurance-funded repair.
Can I siphon fuel from a Honda Accord?
UK Honda models usually have anti-siphon filler necks; OEM information specifies pump-module or tank removal instead.
When are injectors replaced after misfuel on an Accord?
If the engine ran on contaminated diesel, injectors and HP pump are inspected or replaced per Honda diagnostics; not always required if caught before start.
Need professional misfuel recovery?
Find a certified operator or read consumer guidance for your next steps.
Find an operator Consumer guidance